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Technique for signal transmission mode determination in wireless communication system and apparatus for same

a wireless communication system and signal transmission technology, applied in the field of wireless communication systems, can solve the problems of limiting the maximum throughput achievable, reducing the total bandwidth of the system, and reducing the performance of cell-edge ues, so as to achieve efficient transmission, reduce inter-cell interference, and increase the throughput of ues

Inactive Publication Date: 2014-02-18
LG ELECTRONICS INC
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AI Technical Summary

Benefits of technology

The present invention aims to increase the throughput of a user equipment (UE) in a wireless communication system by reducing inter-cell interference. This can be achieved by actively canceling inter-cell interference and efficiently transmitting the control information needed for this. The effects of the invention are not limited to the particular aspects described and other advantages will be clear from the following description and accompanying drawings.

Problems solved by technology

Therefore, interference occurs to different UEs located in the adjacent cells in the cellular wireless environment, thereby rapidly decreasing the performance of cell-edge UEs.
However, if frequency resources are segmented for each cell, the total bandwidth of the system is decreased, which limits an achievable maximum throughput irrespective of the actual situation of the neighbor cell.
However, its complex signaling and imperfect coordination may lead to the degradation of overall performance.
However, this method is effective only when each cell has a small amount of traffic, but does not present a basic solution to interference.

Method used

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  • Technique for signal transmission mode determination in wireless communication system and apparatus for same
  • Technique for signal transmission mode determination in wireless communication system and apparatus for same
  • Technique for signal transmission mode determination in wireless communication system and apparatus for same

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Embodiment Construction

[0031]The configuration, operation, and other features of the invention will become apparent to those having ordinary skill in the art upon examination of the following embodiments of the present invention described with reference to the attached drawings. The embodiments of the present invention as set forth herein are examples in which the technical features of the present invention are applied to an orthogonal frequency division multiple access (OFDMA) system.

[0032]FIG. 1 illustrates an example in which a specific UE receives a service from at least one BS according to the location of the UE within a cell in a multi-cellular environment.

[0033]Referring to FIG. 1, UE a is located at the edge of Cell A and receives a service from Cell A. However, because UE a also belongs to the edge of Cell B, it may be affected by Cell B. Similarly, UE b is located at the edge of Cell B and receives a service from Cell B. However, because UE b also belongs to the edge of Cell A, it may be affecte...

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Abstract

The present invention relates to a method for determining the transmission mode in a wireless communication system. More specifically, the present invention relates to a method for transmission mode determination in a wireless communication system, comprising a step wherein feedback information regarding channel status is received, and a step wherein it is determined based on said feedback information whether a transmission signal will be transmitted via each of a fixed number of subcarriers, after applying a propagation sequence.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is the National Stage filing under 35 U.S.C. 371 of International Application No. PCT / KR2009 / 006183, filed on Oct. 26, 2009, which claims the benefit of earlier filing date and right of priority to Korean Application No. 10-2008-0138081, filed on Dec. 31, 2008, and also claims the benefit of U.S. Provisional Application Ser. No. 61 / 108,555, filed on Oct. 27, 2008, the contents of all of which are incorporated by reference herein in their entirety.TECHNICAL FIELD[0002]The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for determining a transmission mode in a wireless communication system.BACKGROUND ART[0003]In a cellular wireless communication system, radio resources are shared between adjacent cells. Therefore, interference occurs to different UEs located in the adjacent cells in the cellular wireless environment, thereby rapidly decreasing the performance of...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H04J3/00H04W72/00H04J1/00
CPCH04L5/006H04L5/0028H04L5/001H04W72/085H04L5/0044H04W72/0453H04W72/542H04W28/18H04W16/12H04W28/0942H04W24/10H04B17/336
Inventor KWON, YEONG HYEONHAN, SEUNG HEELEE, HYUN WOOMOON, SUNG HOKWAK, JIN SAMKIM, DONG CHEOLNOH, MIN SEOK
Owner LG ELECTRONICS INC
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